1
Joseph R Woolslayer, Cecil Jenkins, John C Brittain: Automated pipe racking apparatus. Lee C Moore Corporation, Alan T McCollom, February 16, 1988: US04725179 (120 worldwide citation)

Apparatus for use to facilitate threading and unthreading substantially vertical lengths of pipe on a drilling rig by moving the pipe between the well bore center line and a racking assembly. An arm having a gripping head mounted thereon is extendable and retractable relative to a carriage mounted o ...


2
John C Brittain, Cecil Jenkins, William P Adelman, Joseph R Woolslayer: Pipe moving apparatus and method. Lee C Moore Corporation, Laney Dougherty Hessin & Beavers, May 30, 1989: US04834604 (65 worldwide citation)

Machine for moving casing or pipe from a horizontal position adjacent a well to a vertical position over the well bore. The machine includes a boom movable between a lowered position and a raised position by a hydraulic ram. A strongback grips the pipe and holds the same until the pipe is vertically ...


3
Homer J Woolslayer, Cecil Jenkins: Pipe handling apparatus for oil well drilling derrick. Lee C Moore Corporation, Brown Murray Flick & Peckham, October 19, 1976: US03986619 (42 worldwide citation)

The inner end of a boom is pivotally supported on a horizontal axis in front of a well, over which there is an oil well drilling derrick. Pivotally connected to the outer end of the boom on an axis parallel to the axis just mentioned, is clamping means for gripping drill pipe connected at one end to ...


4
Cecil Jenkins: Floor level pipe handling apparatus. Lee C Moore Corporation, Brown Flick & Peckham, October 30, 1979: US04172684 (40 worldwide citation)

Mounted on the floor of an oil well derrick substructure is a support that is rockable on an axis perpendicular to the centerline of a well being drilled beneath the substructure. One end of an arm is pivotally mounted on the support on an axis transverse to the first mentioned axis, while the oppos ...


5
Homer J Woolslayer, Robert D Woods, Cecil Jenkins: Safety support for safety belts. Lee C Moore Corporation, Brown Flick & Peckham, October 16, 1979: US04171032 (25 worldwide citation)

A vertical sleeve secured to a side of a structure on which a man is working receives and supports the lower end portion of a pole that has a much longer inclined upper portion so that its upper end will be directly above a point spaced laterally from the sleeve. A safety line suspended from the upp ...


6
Homer J Woolslayer, Cecil Jenkins, Dewayne G Vogt: Method and apparatus for raising and lowering a telescoping mast. Lee C Moore Corporation, Laney Dougherty Hessin Claro & Beavers, July 8, 1986: US04598509 (20 worldwide citation)

Method and apparatus for raising and lowering a telescoping mast. A telescoping mast having an upper section slidably received within a lower section is pivotally connected to a base in a horizontal position. A line is connected to the lower end of the upper section and is placed over a pulley mount ...


7
Cecil Jenkins, Joseph R Woolslayer: Oil well drilling rig mover. Lee C Moore Corporation, Brown Flick & Peckham, March 8, 1983: US04375892 (18 worldwide citation)

An oil well drilling rig mover is formed from a pair of laterally spaced dollies detachably connected by braces between them. Each of the dollies includes a beam for resting on a support, and a pair of laterally spaced wheels at each end of the beam. An arm extends outwardly from the outer end of a ...


8
Homer J Woolslayer, Cecil Jenkins: Lee C Moore Corporation, Laney Dougherty Hessin Claro & Beavers, May 13, 1986: US04587778 (14 worldwide citation)

A method and apparatus for erecting a drilling rig mast. The foot of a drilling rig mast is pinned to the base of a substructure. A traveling block is strung with a crown block at the top of the mast and the traveling block is secured to the substructure. A drawworks mounted on the substructure reel ...


9
Joseph R Woolslayer, Cecil Jenkins, Lester E Hilfiger: Pipe rack with pivoted fingers and screw conveyors. Lee C Moore Corporation, Brown Murray Flick & Peckham, October 19, 1976: US03986618 (11 worldwide citation)

A plurality of vertically spaced rows of longitudinally inclined fingers spaced laterally in each row are pivotally supported on transverse horizontal axes near one end. The fingers slope upwardly from the supporting means and also project in the opposite direction from said axes. Vertically movable ...


10
Cecil Jenkins: Movable working platform for use in racking drill pipe. Lee C Moore Corporation, Brown Flick & Peckham, August 7, 1979: US04163625 (7 worldwide citation)

Suspension members flexibly connected to a carriage and to an overhead support above the racking platform of an oil well mast or derrick support the carriage, which is provided with a floor to support a derrick man therein. The lower end of the suspension means can be swung back and forth parallel t ...



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